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Abstract

Neogene Basins in Turkish Mediterranean Sea, Antalya, Adana-Mersin, Cilicia, Iskenderun, and Mesaoria have been aparted during Upper Miocene-Pliocene time due to Aksu-Kyrenia-Misis Ridge at North and Larnaca Ridge at South. Turkish Petroleum Corp. (TPAO) has been actively working on those basins and this study summarizes the findings of different seismic surveys carried out by Turkish Petroleum Corp. since 1974 in Eastern Mediterranean. There are a total of twelve offshore wells in Turkish Mediterranean Sea and prior to this date only two wells were drilled in the Mersin offshore, in 1966 and 1970, sequencely. With the Pliocene discoveries in the Mediterranean and the interpretation of newly acquired seismic data, new insights emerged to the exploration strategy of Turkish Petroleum Corp. in this region. During and shortly after the Messinian salinity crisis, the Mersin Basin experienced a slight tilting which caused the salt to act as a regional detachment level. During Pliocene time with the loading of the sediments mostly from north-northwest, sliding of salt intensifies towards the south. As a result of gravity-sliding system, all of the characteristic features of salt tectonics can be identified at Mersin Basin which are present in extensional, transitional and compressional zones. Especially in the extensional zone, growth faults are associated with large-scale rollover structures which formed both four-way and three-way dipping structuralstratigraphical thick Pliocene traps, which are high potential targets. Lower Pliocene fluviodeltaic deposits are potential good reservoir units with thick sand bodies interbedded with thick calcareous shales. These shales have excellent sealing capacity. Several DHI’s are observed along growth faults within the Lower Pliocene on the stack data and AVO analyses conclude Class-III AVO response in several zones in this sequence. High sedimentation rates, observed organic matter in the cores and suitable thermal regime during Pliocene suggests high potential of biogenic gas generation in the region. Messinian evaporites in the Antalya Basin were deformed in compressional tectonic regime under the varying stress regime through the Mediterranean which is different from Mersin, Nile Delta and Levantine Basins, where passive margin salt tectonic models can be applicable, A wide compressional domain with foldthrusts and two thousands meters of thick Pliocene depocenters, observed on regional seismic sections may represent high potentail structural targets.

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/content/papers/10.3997/2214-4609-pdb.380.61
2013-05-15
2021-10-16
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